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Finding the Fourth Proportional to 580,641.85, 870,623.79 and 225,240.58

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Solution

The fourth proportional to 580,641.85, 870,623.79 and 225,240.58 is: 337,729.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,641.85 : 870,623.79 = 225,240.58 : x
  2. Step 2: Convert to fraction form
    580,641.85/870,623.79 = 225,240.58/x
  3. Step 3: Cross multiply
    580,641.85x = 870,623.79 × 225,240.58
  4. Step 4: Simplify right side
    580,641.85x = 196,099,807,421.40
  5. Step 5: Solve for x
    x = 196,099,807,421.40/580,641.85
  6. Step 6: Final answer
    x = 337,729.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.